/* ============================================================
   Artifacts page
   ============================================================ */
.art-page-hero {
  padding-top: clamp(140px, 18vh, 200px);
  padding-bottom: clamp(40px, 6vw, 80px);
  position: relative;
  overflow: hidden;
}
.art-page-hero .art-page-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(15,45,105,0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15,45,105,0.05) 1px, transparent 1px);
  background-size: 96px 96px;
  mask-image: radial-gradient(ellipse 60% 60% at 50% 30%, black 30%, transparent 80%);
  pointer-events: none;
}
.art-page-hero .container { position: relative; }
.art-page-hero .h1 { max-width: 18ch; }
.art-page-hero .lead { margin-top: 18px; max-width: 56ch; }

.art-count-badge {
  display: inline-block;
  font-size: 0.32em;
  vertical-align: middle;
  padding: 6px 14px;
  margin-left: 14px;
  background: var(--bg-card);
  border: 1px solid var(--line-2);
  color: var(--ink-3);
  border-radius: 100px;
  letter-spacing: 0.04em;
  font-weight: 500;
  transform: translateY(-2px);
}

.art-toc {
  display: flex; gap: 8px; flex-wrap: wrap;
  margin-top: 36px;
}
.art-toc a {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px;
  border-radius: 100px;
  border: 1px solid var(--line-2);
  font-size: 13.5px;
  color: var(--ink-2);
  background: var(--bg-card);
  white-space: nowrap;
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}
.art-toc a:hover { background: var(--ink); color: var(--ink-on-dark); border-color: var(--ink); }
.art-toc a .mono { color: var(--ink-3); font-size: 11px; letter-spacing: 0.06em; }
.art-toc a:hover .mono { color: rgba(255,255,255,0.6); }

/* Section title block on artifacts/documents — same structure as .section-head on the main page */
.page-section-head {
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 48px 0 24px;
  border-top: 1px solid var(--line);
  align-items: flex-start;
}
.page-section-head:first-of-type { border-top: 0; }
.page-section-head .section-meta {
  width: 100%;
  display: flex; flex-direction: row; align-items: baseline; gap: 14px; flex-wrap: wrap;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.page-section-head .section-meta > .mono.ink-3,
.page-section-head .section-meta > .mono.ink-3:last-child { margin-left: auto; text-align: right; }
.page-section-head .section-title {
  display: flex; flex-direction: column; gap: 14px;
  align-items: flex-start;
}
.page-section-head .h2 { max-width: 30ch; }
.page-section-head .lead { font-size: 17px; max-width: 60ch; margin: 0; }

/* artifact grid: full-width placeholders */
.artifacts-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
  padding-bottom: 32px;
  align-items: start;
}
.artifact-tile {
  background: var(--bg-card);
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .3s var(--ease), border-color .25s var(--ease), box-shadow .35s var(--ease);
}
.artifact-tile:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: 0 18px 40px -16px rgba(15,45,105,0.18);
}
.artifact-tile .placeholder {
  flex: 1; min-height: 280px;
  border-radius: 0;
  border: 0;
  border-bottom: 1px solid var(--line);
}
.artifact-tile .placeholder.tall { min-height: 380px; }

/* Image artifacts: keep diagram fully visible, preserve aspect ratio */
.art-img-wrap {
  position: relative;
  display: block;
  width: 100%;
  background:
    repeating-linear-gradient(45deg,
      color-mix(in oklab, var(--accent) 4%, var(--bg-deep)) 0 6px,
      var(--bg-deep) 6px 12px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  /* reset button defaults */
  padding: 0;
  border-top: 0;
  border-left: 0;
  border-right: 0;
  font: inherit;
  color: inherit;
  cursor: zoom-in;
  text-align: left;
}
button.art-img-wrap:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}
.art-img-wrap img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  background: #fff;
  transition: transform .4s var(--ease);
}
.artifact-tile:hover .art-img-wrap img { transform: scale(1.012); }
.art-img-zoom {
  position: absolute;
  right: 12px;
  bottom: 10px;
  padding: 6px 10px;
  font-size: 10.5px;
  letter-spacing: 0.06em;
  background: rgba(15, 45, 105, 0.88);
  color: #fff;
  border-radius: 999px;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .25s var(--ease), transform .25s var(--ease);
  pointer-events: none;
}
.artifact-tile:hover .art-img-zoom { opacity: 1; transform: translateY(0); }

/* Real tables rendered as artifacts (NPV cash-flow, sensitivity) */
.art-table-wrap {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border-bottom: 1px solid var(--line);
}
.art-table-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.art-table-head .mono {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 600;
}
.art-table-head .muted { font-size: 12px; color: var(--ink-3); }
.art-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.art-table th, .art-table td {
  padding: 9px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}
.art-table thead th {
  background: var(--bg-deep);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.art-table .art-th-num,
.art-table .art-td-num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.art-table .art-td-key { width: 60px; font-weight: 600; color: var(--ink); }
.art-table .art-td-muted { color: var(--ink-3); }
.art-table .art-td-strong { font-weight: 600; }
.art-table tbody tr.art-tr-neg { background: rgba(230, 30, 60, 0.025); }
.art-table tbody tr.art-tr-pos { background: rgba(15, 45, 105, 0.02); }
.art-table tbody tr.art-tr-base { background: color-mix(in oklab, var(--accent) 6%, var(--bg-card)); }
.art-table tbody tr.art-tr-base td { font-weight: 600; color: var(--ink); }
.art-table tbody tr.art-tr-total { background: var(--ink); }
.art-table tbody tr.art-tr-total td { color: var(--ink-on-dark); font-weight: 600; border-bottom: 0; padding: 12px 16px; }

/* Wider table layout (more columns, content-heavy) */
.art-table-wide { table-layout: auto; }
.art-table-wide th, .art-table-wide td { padding: 10px 14px; font-size: 12.5px; vertical-align: top; }
.art-table-tight th, .art-table-tight td { padding: 8px 10px; font-size: 12px; }
.art-table .art-td-long { color: var(--ink-2); line-height: 1.45; }
.art-table .art-td-long em { color: var(--accent); font-style: normal; font-weight: 600; }
.art-table-foot {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  padding: 12px 20px;
  background: var(--bg-deep);
  font-size: 12.5px;
  color: var(--ink-2);
  border-top: 1px solid var(--line);
}
.art-table-foot strong { color: var(--accent); font-weight: 600; font-family: var(--font-mono); }
.artifact-tile .at-foot {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
}
.artifact-tile .at-tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--ink-3);
}
.artifact-tile .at-title {
  font-size: 15px;
  font-weight: 500;
  margin-top: 2px;
  color: var(--ink);
}
.artifact-tile .at-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.04em;
}

/* spans */
.span-12 { grid-column: span 12; }
.span-11 { grid-column: span 11; }
.span-10 { grid-column: span 10; }
.span-9  { grid-column: span 9; }
.span-8  { grid-column: span 8; }
.span-7  { grid-column: span 7; }
.span-6  { grid-column: span 6; }
.span-5  { grid-column: span 5; }
.span-4  { grid-column: span 4; }
.span-3  { grid-column: span 3; }
.span-2  { grid-column: span 2; }
.span-1  { grid-column: span 1; }
@media (max-width: 980px) {
  .span-12, .span-11, .span-10, .span-9, .span-8, .span-7, .span-6, .span-5, .span-4, .span-3, .span-2, .span-1 { grid-column: span 12; }
}

/* ============================================================
   Programme Gantt — full plan from xlsx
   ============================================================ */
.art-gantt-wrap {
  display: flex; flex-direction: column;
  background: var(--bg-card);
  border-bottom: 1px solid var(--line);
}
.art-gantt-legend {
  display: flex; flex-wrap: wrap; gap: 14px 22px;
  padding: 12px 20px;
  background: var(--bg-deep);
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  color: var(--ink-2);
}
.art-gantt-lg { display: inline-flex; align-items: center; gap: 7px; }
.art-gantt-lg-sw { width: 18px; height: 10px; border-radius: 2px; display: inline-block; }
.art-gantt-lg-diamond {
  width: 11px; height: 11px; display: inline-block;
  transform: rotate(45deg);
  border-radius: 1px;
}
.art-gantt-lg-n {
  font-size: 10px;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  padding: 1px 5px;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.art-gantt {
  --gantt-label-w: 320px;
  --gantt-row-h: 24px;
  background: var(--bg-card);
  overflow: auto;
  padding: 6px 0 10px;
}
.art-gantt-head-row,
.art-gantt-monthrow,
.art-gantt-row {
  display: grid;
  grid-template-columns: var(--gantt-label-w) 1fr;
  min-width: 980px;
  align-items: stretch;
}
.art-gantt-head-row { height: 22px; }
.art-gantt-monthrow { height: 22px; border-bottom: 1px solid var(--line); }
.art-gantt-row { height: var(--gantt-row-h); border-bottom: 1px dashed color-mix(in oklab, var(--line) 70%, transparent); }
.art-gantt-row:hover { background: color-mix(in oklab, var(--accent) 4%, transparent); }
.art-gantt-row.is-phase { background: color-mix(in oklab, #8FAADC 8%, transparent); border-bottom: 1px solid var(--line); }
.art-gantt-row.is-phase:hover { background: color-mix(in oklab, #8FAADC 14%, transparent); }

.art-gantt-label {
  display: flex; align-items: center; gap: 8px;
  padding: 0 12px;
  border-right: 1px solid var(--line);
  font-size: 11.5px;
  color: var(--ink-2);
  background: var(--bg-card);
  position: sticky; left: 0; z-index: 2;
}
.art-gantt-row.is-phase .art-gantt-label {
  font-weight: 600;
  color: var(--ink);
  background: color-mix(in oklab, #8FAADC 18%, var(--bg-card));
}
.art-gantt-row.is-milestone-row .art-gantt-label {
  background: color-mix(in oklab, #C00000 5%, var(--bg-card));
}
.art-gantt-id {
  font-size: 10px;
  color: var(--ink-3);
  background: var(--bg-deep);
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.04em;
  flex-shrink: 0;
  min-width: 38px;
  text-align: center;
}
.art-gantt-row.is-phase .art-gantt-id { background: #8FAADC; color: #1F4E78; }
.art-gantt-row.is-milestone-row .art-gantt-id { background: #C00000; color: white; }
.art-gantt-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
}

.art-gantt-cells {
  display: grid;
  grid-template-columns: repeat(30, 1fr);
  position: relative;
  min-width: 660px;
}
.art-gantt-cell {
  border-right: 1px solid color-mix(in oklab, var(--line) 30%, transparent);
  height: 100%;
}
.art-gantt-cell.tick { border-right-color: color-mix(in oklab, var(--line) 90%, transparent); }

.art-gantt-head-cells {
  position: relative;
}
.art-gantt-phaseband {
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ink);
  text-transform: uppercase;
  border-right: 1px solid var(--line);
}
.art-gantt-mh {
  display: flex; align-items: center; justify-content: center;
  font-size: 10px;
  color: var(--ink-3);
  border-right: 1px solid color-mix(in oklab, var(--line) 30%, transparent);
}
.art-gantt-mh.tick { color: var(--ink-2); font-weight: 600; }

.art-gantt-bar {
  grid-row: 1;
  height: calc(var(--gantt-row-h) - 8px);
  margin: 4px 1px;
  border-radius: 3px;
  display: flex; align-items: center;
  padding: 0 6px;
  color: rgba(255,255,255,0.92);
  position: relative;
  box-shadow: inset 0 -1px 0 rgba(0,0,0,0.18);
  transition: filter .2s var(--ease), transform .2s var(--ease);
}
.art-gantt-bar:hover { filter: brightness(1.07); transform: translateY(-1px); }
.art-gantt-bar.is-phase {
  height: calc(var(--gantt-row-h) - 6px);
  margin: 3px 1px;
  border-radius: 4px;
  box-shadow: inset 0 -1px 0 rgba(0,0,0,0.22);
}
.art-gantt-bar-range {
  font-size: 9.5px;
  letter-spacing: 0.04em;
  opacity: 0.92;
  font-weight: 500;
}

.art-gantt-milestone {
  grid-row: 1;
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.art-gantt-milestone-diamond {
  width: 14px; height: 14px;
  transform: rotate(45deg);
  border-radius: 1px;
  box-shadow: 0 0 0 2px var(--bg-card), 0 2px 6px rgba(192, 0, 0, 0.35);
}
.art-gantt-milestone-label {
  position: absolute;
  top: 50%;
  left: calc(100% + 6px);
  transform: translateY(-50%);
  font-size: 9.5px;
  color: #C00000;
  font-weight: 700;
  letter-spacing: 0.04em;
  pointer-events: none;
}

@media (max-width: 980px) {
  .art-gantt { --gantt-label-w: 220px; }
  .art-gantt-name { font-size: 11px; }
}

/* ============================================================
   Documents page
   ============================================================ */
.doc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}
@media (max-width: 980px) { .doc-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 580px) { .doc-grid { grid-template-columns: 1fr; } }

.doc-card {
  background: var(--bg-card);
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  padding: 24px;
  display: flex; flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: transform .3s var(--ease), border-color .25s var(--ease), box-shadow .35s var(--ease);
  text-decoration: none;
  color: inherit;
}
.doc-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: 0 18px 40px -16px rgba(15,45,105,0.18);
}
.doc-preview {
  height: 220px;
  border-radius: 8px;
  position: relative;
  overflow: hidden;
  margin-bottom: 18px;
  background: var(--bg-deep);
  display: flex; flex-direction: column;
  justify-content: space-between;
  padding: 18px;
}
.doc-preview .doc-stamp {
  position: absolute; right: 14px; top: 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  padding: 4px 9px;
  border-radius: 100px;
  letter-spacing: 0.08em;
  color: var(--ink-3);
}
.doc-preview-lines {
  display: flex; flex-direction: column; gap: 7px;
  margin-top: auto;
}
.doc-preview-line {
  height: 6px;
  background: var(--line);
  border-radius: 3px;
}
.doc-preview-line.short { width: 50%; }
.doc-preview-line.med { width: 75%; }
.doc-preview-line.head {
  height: 10px;
  width: 55%;
  background: var(--accent);
  opacity: 0.85;
  margin-bottom: 8px;
}

.doc-meta { display: flex; flex-direction: column; gap: 6px; }
.doc-meta .mono { font-size: 11px; letter-spacing: 0.08em; color: var(--ink-3); }
.doc-meta .doc-title { font-size: 17px; font-weight: 500; line-height: 1.3; color: var(--ink); }
.doc-meta .doc-sub { font-size: 13.5px; color: var(--ink-3); margin-top: 4px; }
.doc-meta .doc-action {
  margin-top: 18px;
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13.5px; color: var(--accent);
}
.doc-action .arrow { transition: transform .25s var(--ease); }
.doc-card:hover .doc-action .arrow { transform: translateX(4px); }

/* Annotation block */
.annot-block {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 36px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 36px;
}
@media (max-width: 860px) { .annot-block { grid-template-columns: 1fr; padding: 24px; } }
.annot-body { color: var(--ink-2); font-size: 16px; line-height: 1.7; }
.annot-body p { margin: 0 0 14px; }
.annot-side {
  display: flex; flex-direction: column; gap: 14px;
}
.annot-side .annot-stat {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  display: flex; flex-direction: column; gap: 2px;
}
.annot-side .annot-stat .mono { font-size: 10.5px; letter-spacing: 0.06em; color: var(--ink-3); }
.annot-side .annot-stat strong { font-size: 22px; font-weight: 500; letter-spacing: -0.02em; }

.annot-stat-stack {
  background: var(--ink);
  color: var(--ink-on-dark);
  border: 0 !important;
}
.annot-stat-stack > .mono { color: rgba(255,255,255,0.55) !important; }
.annot-method-list {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: flex; flex-direction: column;
  gap: 8px;
}
.annot-method-list li {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  font-size: 13px;
  color: rgba(255,255,255,0.85);
  line-height: 1.4;
}
.annot-method-list li:last-child { border-bottom: 0; }
.annot-method-list li .mono {
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
}

/* Sources */
.sources-bar {
  display: flex; align-items: center; gap: 14px;
  padding: 18px 24px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--bg-card);
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.sources-bar .mono { font-size: 12px; letter-spacing: 0.06em; color: var(--ink-3); }
.sources-bar input[type="search"] {
  flex: 1;
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 15px;
  color: var(--ink);
  outline: none;
  padding: 6px 0;
  min-width: 200px;
}
.sources-bar input::placeholder { color: var(--ink-faint); }
.sources-filter {
  display: flex; gap: 4px; padding: 3px;
  background: var(--bg-deep);
  border-radius: 100px;
}
.sources-filter button {
  font-size: 12px;
  padding: 6px 12px;
  border: 0;
  background: transparent;
  border-radius: 100px;
  color: var(--ink-3);
  font-weight: 500;
  cursor: pointer;
}
.sources-filter button.active {
  background: var(--ink);
  color: var(--ink-on-dark);
}
.sources-filter .count { color: var(--ink-faint); font-family: var(--font-mono); font-size: 10px; margin-left: 4px; }
.sources-filter button.active .count { color: rgba(255,255,255,0.55); }

.sources-list {
  display: flex; flex-direction: column;
}
.source-row {
  display: grid;
  grid-template-columns: 56px 90px 1fr 90px;
  gap: 18px;
  padding: 16px 22px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-card);
  align-items: baseline;
  transition: background .15s var(--ease);
  scroll-margin-top: 100px;
}
.source-row:target {
  background: var(--accent-soft);
  box-shadow: inset 3px 0 0 var(--accent);
  animation: src-flash 1.4s var(--ease) 1;
}
@keyframes src-flash {
  0%   { background: color-mix(in oklab, var(--accent) 28%, var(--bg-card)); }
  100% { background: var(--accent-soft); }
}
.source-row:first-child { border-top-left-radius: var(--r-md); border-top-right-radius: var(--r-md); border-top: 1px solid var(--line); }
.source-row:last-child { border-bottom-left-radius: var(--r-md); border-bottom-right-radius: var(--r-md); }
.source-row:hover { background: var(--bg-deep); }
.source-row .src-num { font-family: var(--font-mono); color: var(--ink-faint); font-size: 12px; }
.source-row .src-group { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.06em; color: var(--ink-3); }
.source-row .src-title { font-size: 14.5px; color: var(--ink-2); line-height: 1.45; display: flex; flex-direction: column; gap: 6px; }
.src-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--accent);
  text-decoration: none;
  word-break: break-all;
  overflow-wrap: anywhere;
  align-self: flex-start;
  max-width: 100%;
  transition: color .2s var(--ease);
}
.src-link .mono { font-size: 11px; }
.src-link:hover { text-decoration: underline; color: var(--accent-2); }
.source-row .src-meta { font-family: var(--font-mono); font-size: 11px; color: var(--ink-faint); text-align: right; letter-spacing: 0.04em; }
@media (max-width: 860px) {
  .source-row { grid-template-columns: 44px 1fr; gap: 8px; }
  .source-row .src-group, .source-row .src-meta { display: none; }
}

/* ============================================================ */
/* Lightbox preview for image artifacts                          */
/* ============================================================ */
.art-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  grid-template-rows: auto 1fr auto;
  grid-template-columns: 64px 1fr 64px;
  grid-template-areas:
    "top   top   top"
    "prev  stage next"
    "hint  hint  hint";
  background: rgba(8, 14, 28, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  animation: artLbIn 0.18s var(--ease, ease-out);
}
@keyframes artLbIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.art-lightbox-topbar {
  grid-area: top;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 20px 28px 16px;
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.art-lightbox-meta {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  min-width: 0;
}
.art-lightbox-num {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.55);
  padding: 4px 10px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 4px;
  flex-shrink: 0;
  margin-top: 2px;
}
.art-lightbox-titles { min-width: 0; }
.art-lightbox-tag {
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  margin-bottom: 4px;
}
.art-lightbox-title {
  font-size: 16px;
  font-weight: 500;
  color: #fff;
  line-height: 1.35;
  max-width: 70ch;
}

.art-lightbox-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.art-lightbox-count {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.6);
  margin-right: 4px;
}
.art-lightbox-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 14px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(255,255,255,0.85);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s var(--ease), border-color .15s var(--ease), color .15s var(--ease);
  font-family: var(--font-mono);
}
.art-lightbox-btn:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.32);
  color: #fff;
}
.art-lightbox-close { font-size: 14px; padding: 0; width: 36px; }

.art-lightbox-stage {
  grid-area: stage;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  overflow: auto;
  cursor: zoom-in;
}
.art-lightbox-stage img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  background: #fff;
  border-radius: 2px;
  box-shadow: 0 30px 80px -20px rgba(0,0,0,0.6);
  transition: transform .25s var(--ease, ease-out);
}
.art-lightbox-stage.is-zoomed {
  cursor: zoom-out;
  align-items: flex-start;
  justify-content: flex-start;
}
.art-lightbox-stage.is-zoomed img {
  max-width: none;
  max-height: none;
  width: auto;
  height: auto;
  cursor: zoom-out;
}

.art-lightbox-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 0;
  color: rgba(255,255,255,0.7);
  font-size: 40px;
  line-height: 1;
  cursor: pointer;
  font-family: inherit;
  font-weight: 300;
  transition: color .15s var(--ease), background .15s var(--ease);
}
.art-lightbox-nav:hover {
  color: #fff;
  background: rgba(255,255,255,0.05);
}
.art-lightbox-prev { grid-area: prev; }
.art-lightbox-next { grid-area: next; }

.art-lightbox-hint {
  grid-area: hint;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  padding: 14px 20px 18px;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  border-top: 1px solid rgba(255,255,255,0.06);
}

@media (max-width: 720px) {
  .art-lightbox {
    grid-template-columns: 44px 1fr 44px;
  }
  .art-lightbox-topbar {
    padding: 14px 16px 12px;
    flex-direction: column;
    gap: 12px;
  }
  .art-lightbox-actions { align-self: flex-end; }
  .art-lightbox-title { font-size: 14px; }
  .art-lightbox-nav { font-size: 32px; }
  .art-lightbox-hint { gap: 14px; flex-wrap: wrap; font-size: 9.5px; padding: 10px 12px 12px; }
}